Loomio introduced some premium features.
The most interesting, in my opinion, are
- Subgroups
- Category tags
- Data export (CSV or XLS)
- Slack integration
If I well understood, framavox include now the subgroups (for free instead of paying, excellent! 
).
There is some hope for Tags and Data export?
And about Slack integration… maybe are you thinking to a Mattermost integration?
Thank you so much for your incredible work